Door-stop.



No. 652,659. Patented June 26, I900.

E. 0. BLAGKWELL.

DOOR STOP.

(Applicatidn filed Apr. 12, 1900.)

(No Model.)

NITE mares aren't rricn.

EDIVIN ORLANDO BLACKIVELL, OF IVYNYARD, TASMANIA.

DOOR-STOP.

SPECIFICATION forming part of Letters Patent No. 652,659, dated June 26,1900.

Application filed April 12, 1900.

T0 aZZ ZUhOfib it may concern:

Be it known that LEDWIN ORLANDO BLACK- WELL, a subject of the Queen ofGreat Britain and Ireland, residing at Wynyard, in the Colony ofTasmania, have invented certain new and useful Improvements in Door-Stops; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

The object of my invention is to provide an improved door-stoppossessing the qualities of che'apness, durability, efficiency, and neatappearance.

My stop is light and portable and able to act without being secured byscrewing or nailing to the door, floor, or wall, although permanentsecuring to the floor may be effected, if desired.

I make my stop of one piece of metal. When placed loosely upon the floornear a door, it can be pushed with the foot to any position at which thedoor is to be held, and it can be caused to hold the door or release thesame without the operator stooping to handle it, the foot being usedinstead.

While the material used, the design, the proportions of parts, and thefinish may be varied, my invention in each form possesses three mainmembers, two of which meet at one end to form a compressible wedge,while the third acts as a spring to resist the compression of the saidwedge and to restore the members of the same to their normal positionswhen the pressure is removed. Other subsidiary useful features are alsoemployed and hereinafter explained.

Referring now to the accompanying drawings, Figure 1 shows inperspective view one of my stops. Fig. 2 shows a stop in side elevationin its normal uncompressed condition with a part brokenaway; and Fig. 3shows a stop in side elevation in a compressed condition, the lower partof a door held in place by it being also shown. A slight modification ofFigs. 1 and 2 is seen in Fig. 3.

The same letters and numerals of reference represent corresponding partsin all the figures.

In the drawings is depicted a single strip Serial No. 12,609. (Nomodel.)

of metal bent so as to have an upper member a, and a lower member 1),which meet at or near a point 0 (the front end or foot) and form acompressible wedge. The lower member Z) is at its back end made to forma rear foot, either by a gradual downward slope or by a sharp bend, asseen at (Z. Where the front end is better made higher, there is also asufficient bend downward at the point 0 similar to that at d. Thematerial forming member a or Z) is at its back end continued, being bentto cross the angular space be tween members a b and form a member, as c,which bears upon or presses with its end f against the member (in thiscase (2.) toward which it extends, thus tending to keep a and b apart ata suitable angle, as angle 4, Fig. 2. Care is taken during themanufacture to have the parts so strong and springy that they may berepeatedly compressed, as in Fig. 3, and then when the pressure isremoved will return to the position of Fig. 2. The natural tendency ofmembers a Z) is to keep the angle 4 between them, and member e is merelya reinforcement and may be formed in various ways to serve that purpose.The amount of compression in Fig. 3, however, exceeds that usuallynecessary. When a door has to be held in place againstunusually-powerful winds or drafts, a larger stop should be used than inother cases. In addition to the spring-power above referred to to holdthe door 5 stationary I ordinarily roughen member a, which contacts withthe under edge of the door, or provide it with projections or grippingmeans 9 of any suitable kind, and I may modify member I) (seen in Fig.2) by providing it with similar projections or means of gripping, ash.The pro jections are sufficiently rough or pointed to secure such a gripupon the door or the door and floor, respectively, (without objectionably damaging the same,) as to prevent the appliance slipping whenthere is a strong draft against the door. The projections it may be soplaced as not to touch or press into the floor 6, except where there isstrong pres sure upon member a. In most cases no proj ections frommember b are needed, especially on carpeted floors.

It is useful to take one or more pieces out of foot d, as seen at d,Fig. 1, in cases in which more grip upon the floor is needed.

The particular gripping means g and h shown may be produced by indentingthe metal.

It is useful to make one or more holes, as at 7, 8, or 9, by which tohang the article when not in use, While it could be fixed to a floor byhole 8 or 9, if wished; but few users will need any holes.

By pressing the foot upon the back of memher a when the door is held bythe stop the door will be released. It is usual to use the foot in thesame way when the stop is to be caused to grip the door and then movethe door by hand till it is jammed.

What I claim as my invention, and desire to secure by Letters Patent ofthe United States, is-

1. A door-stop composed of a piece of metal bent to form three mainmembers, two of which form a compressible wedge, the third acting as aspring resisting compression of the said wedge substantially as and forthe purposes set forth.

2. The combination, in a door-stop formed of an integral piece of metal,of two members forming a compressible Wedge and having means forgripping the door and floor; and a third member interposed between saidwedge member, and acting as a spring to resist the compression of suchmember, substantially as and for the purposes set forth.

3. A door-stop comprising a base; an inclined yielding member, providedwith a gripping-surface connected with said base; an oppositely-inclinedspring connected with the base and bearing beneath said yielding member,substantially as described.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

EDWIN ORLANDO BLACKWELL.

Witnesses:

- G. G. TURRI,

W. H. OUBLEY.

